Increasing Australia's preparedness for vvIBDV


The accidental incursion of exotic IBDV strains, particularly very virulent IBDV (vvIBDV), poses a serious threat to the Australian Poultry Industry. Increasing Australia’s preparedness for such an event is therefore critical to minimize the possibility of these viruses spreading and becoming endemic. Over the last 25 years we have been monitoring Australian IBDV, confirming that endemic strains remain genetically distinct from overseas IBDV and do not cause any mortalities in SPF birds. In the last 6 years however, we have detected variant strains moving across the border into NSW, rapidly spreading and displacing the classical strains previously present in NSW. Exactly how these variants are spreading is uncertain, but the data suggests that current biosecurity measures may be inadequate. Hence in this proposal we hope to continue monitoring and pathotyping strains circulating in Australia with a focus on understanding how variant strains are spreading. As part of this project, we will also help prepare industry for an incursion of vvIBDV by running a workshop, and consolidating all historical data on Australian IBDV.


Chicken Meat

Research Organisation


Objective Summary

(a) To continue monitoring genetic changes occurring in circulating IBDV field strains (b) To examine the pathogenicity of selected field isolates, displaying unusual amino acids changes in SPF flocks (c) To determine the most probable means by which variants are spreading in NSW (d) To run a workshop at AAHL looking at the scenario of vvIBDV entering Australia. (e) To consolidate all historical data on Australian IBDV

Project Code


Project Stage


Project Start Date

Tuesday, May 22, 2018

Project Completion Date

Tuesday, November 30, 2021

Journal Articles From Project

Not Available

National Priority

An environmentally sustainable Australia

National Priority

Adoption of R&D

National Priority

CME-Improve chicken meat production through the whole supply chain